ANCHORAGE, Alaska (AP)  The cause of the trailer home fire that claimed the lives of five young sisters last week was cooking related, the Alaska fire marshal’s office said Thursday.

The fire has been ruled accidental, and no foul play is suspected, the state fire marshal’s office said in a release.

The girls all died of smoke inhalation, the State Medical Examiner’s Office said. It also identified the victims as Alexis Quakenbush, 12, Nevaeh Flores, 8, Lilyanna Flores, 7, Sofia Flores, 6, Jaelynn Flores, 3, all of Palmer.

Authorities have released little information about the Sept. 7 fire, but the fire marshal planned a news conference later Thursday.

The home is located in a small trailer park, just off a major road in an undeveloped area about 45 miles (72 kilometers) northeast of Anchorage.

The area is known as the Butte, accessible by an old highway that takes traffic between Anchorage and Palmer.

Fire officials were notified of the blaze just before 7 a.m. The trailer was fully engulfed when firefighters arrived, and they were alerted there were people unaccounted for.

Alaska State Troopers at the time couldn’t answer if adults were in trailer when the fire started.

The girls’ father, Jimmy Flores, had just started work and left early that day to train as a school bus driver, his brother Armando Astorga told Anchorage television station KTVA.

The girls’ mother, Janelle Quakenbush, left Alexis in charge while she went on a five-minute trip to drive her mother home, Astorga said. The trailer was in flames when she returned.